Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
  • B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting

Definitions

• the invention relates to a supporting winch, in particular for supporting trailers, with a telescopically movable in height, an outer sleeve and an inner sleeve having support member, wherein the outer sleeve comprises a mounting flange for attachment to a vehicle.
• Such support winches are used in particular for supporting trailers of a semitrailer.
• These landing gear winches are made of square tubes, which can be inserted into one another and moved against each other, as known for example from EP 1 104 369 B1.
• EP 0 972 688 A2 proposes a lifting device with shaft tube and support tube, which is fastened to a vehicle chassis via a mounting device.
• the mounting device should be designed as a mounting plate and close an open U-shaped profile element, so that a hollow shaft tube is formed.
• the mounting plate is welded to the U-profile via longitudinal welds along its entire length.
• the main disadvantage of this known lifting device is the elaborate production technology, since the U-shaped profile element must be very accurately welded to the mounting plate.
• Another prior art is EP 0 380 941 A2.
• an outer sleeve is made in one piece with its attachment plate for attaching the support device to a vehicle by the extrusion process. Due to the blank in block form, this method is limited to light metal, in particular aluminum. However, such support devices have not prevailed in the market because they are expensive due to the high quality material and have proven due to the low material strength as vulnerable in the operational use.
• the invention has the object to develop a landing gear, on the one hand is inexpensive to manufacture and on the other hand withstand high loads.
• the object is achieved with a landing gear, in which the outer sleeve and the mounting flange are made in one piece by means of roll bending of a flat steel.
• cold forming is used, only in special cases, with large cross sections or very small bending radii, the material is heated to reduce the forces required for forming.
• the main advantage of roll-bent over extruded sleeves is the almost free choice of the alloy of the plate-like starting material. Here also common steels can be used. Furthermore, it is not necessary to connect individual components via a plurality of welds to be elaborately produced during production. Due to the comparatively short bending process of the material, very large quantities per unit time can be produced.
• each sleeve has a maximum of one connecting weld.
• This type of cohesive connection creates an outer sleeve with a self-contained hollow body, which has a high flexural rigidity. It can the Weld seam can be arranged at a very favorable position for the production.
• the connecting weld is arranged in the axial direction of the outer sleeve.
• the weld may be centrally through a side wall of the sleeve or at an angle between two mutually adjacent side walls.
• the mounting flange is on both sides over the outer sleeve over.
• the mounting flange is an integral part of the sleeve.
• the mounting flange has a predetermined hole pattern. For mounting, for example, on a vehicle chassis screws are then inserted through the holes and bolted to the vehicle.
• the mounting flange of the outer sleeve may be formed by a wall bent away from the respective side wall by approximately 90 ° outwards, at the end portion of which a 180 ° deflection is favorably arranged. This results in a double in the region of the mounting flange wall thickness with a particularly low susceptibility to high surface pressures.
• the resulting from the assignment vehicle-side wall portion should meet centrally between side walls of the outer sleeve on the complementary opposite wall portion and is advantageously butt welded to it.
• the sleeve has a cavity seal in the area of the transfer. Due to the sharp assignment it comes to microcracks on the outside and on the inside to a cavitation, in which moisture can penetrate and to a Rust formation leads. Such corrosion phenomena are effectively avoided by a suitable cavity seal in the entire region of the mounting flange. This also significantly increases the lifetime of the landing gear.
• a particularly high stability of the landing gear is achieved when two opposite side walls of the outer sleeve have an angled wall portion.
• each adjacent to the mounting flange side walls are angled at an angle of 5 ° to 30 °. In this case, the bend should not go beyond the profile depth of the mounting flange and widen in the direction of the mounting flange.
• FIG. 1 shows a plan view of an outer sleeve with flat rolled-out allocation of a mounting flange
• Fig. 2 a view according to FIG. 1 with moderately rolled-out assignment of a mounting flange
• FIG. 3 shows a plan view of an outer sleeve with an inner sleeve arranged therein.
• FIG. 1 shows a top view of an outer sleeve 1 according to the invention, whose side walls 6a, 6b, 6c, 6d surround a substantially rectangular inner space 14.
• the side wall 6b has in its axis of symmetry to a connecting weld 5, which connects both halves of the side wall 6b cohesively with each other.
• the entire landing gear is attached via the outer sleeve 1 to a vehicle, not shown.
• the side wall 6b on both sides of the connecting weld 5 laterally beyond the side walls 6a, 6c projecting mounting flanges 4a, 4b formed.
• the side walls 6a, 6b, 6c, 6d are formed from an originally plate-like stock by bending, and thus seamlessly merge.
• end portions 7a, 7b of the mounting flanges 4a, 4b a contribution 8a, 8b can be seen, on which the material is bent over by 180 °.
• Figure 1 is a sharp assignment, which was re-rolled after the bending process, so that in the region of the assignment, the wall material immediately rests against each other again.
• the side walls 6a, 6c are perpendicular to and the side walls 6b, 6d in the direction of travel 16 (see Figure 3).
• the opposing side walls 6a, 6c are provided with angled wall sections 9a, 9b, which are set outwards by approximately 20 ° in the direction of the side wall 6b.
• FIG. 1 An alternative embodiment with regard to its end sections 7a, 7b is shown in FIG.
• This embodiment has a 180 ° assignment 8a, 8b, which, however, has not been completely re-rolled, so that a looping space 15a, 15b remains. This results in fewer microcracks on the outside of the wrapping 8a, 8b, since the material in this area is not subject to as great a stretching as in the embodiment according to FIG.
• FIG. 3 shows a plan view of a support element 3 comprising an outer sleeve 1 and an inner sleeve 2 inserted therein.
• mounting bolts 13 are inserted into boreholes which are likewise not visible in plan view.
• the fastening bolts 13 protrude beyond the planar surface of the side wall 6b with their fastening flanges 4a, 4b.
• the inner sleeve 2 was also formed from a plate-like starting material by roll bending and connected to a closed hollow body via the connecting weld 11.
• the connecting weld 11 is also located in the axis of symmetry and is disposed immediately adjacent to the connecting weld 5.
• the inner sleeve 2 is formed as a square tube with two equally long pairwise opposite side walls 10a, 10b, 10c, 10d, wherein the side walls 10a, 10c complementary to the side walls 6a, 6c angled wall portions 12a, 12b have.
• the maximum absorbable bending moment is increased and, on the other hand, a good axial guidance of the inner sleeve 2 with respect to the outer sleeve 1 is ensured.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Body Structure For Vehicles (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
• Liquid Crystal (AREA)
• Discharge By Other Means (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Vehicle Body Suspensions (AREA)
• Control Of Transmission Device (AREA)
• Mutual Connection Of Rods And Tubes (AREA)

Priority Applications (9)

Applications Claiming Priority (2)

Publications (2)

Family

ID=37650166

Family Applications (1)

Country Status (11)

Families Citing this family (4)

Family Cites Families (21)

• 2005
  • 2005-07-23 DE DE102005034553A patent/DE102005034553B4/de not_active Expired - Fee Related
• 2006
  • 2006-07-20 AU AU2006274249A patent/AU2006274249B2/en not_active Ceased
  • 2006-07-20 DE DE502006004807T patent/DE502006004807D1/de active Active
  • 2006-07-20 US US11/989,145 patent/US8317225B2/en not_active Expired - Fee Related
  • 2006-07-20 WO PCT/EP2006/007144 patent/WO2007012425A2/de not_active Ceased
  • 2006-07-20 CN CN2006800270108A patent/CN101228051B/zh not_active Expired - Fee Related
  • 2006-07-20 PL PL06776310T patent/PL1907246T3/pl unknown
  • 2006-07-20 CA CA2616172A patent/CA2616172C/en not_active Expired - Fee Related
  • 2006-07-20 EP EP06776310A patent/EP1907246B1/de not_active Not-in-force
  • 2006-07-20 BR BRPI0613918-3A patent/BRPI0613918B1/pt not_active IP Right Cessation
  • 2006-07-20 AT AT06776310T patent/ATE442281T1/de active
  • 2006-07-20 ES ES06776310T patent/ES2333363T3/es active Active

Also Published As

Similar Documents

Legal Events